PARIS, France (AFP) — The French drugs agency warned doctors for a second time Saturday about using hydroxychloroquine, the drug championed by US President Donald Trump as a “game changer” in the fight against COVID-19, as the number of cases of worrying side effects continued to rise. The agency, known by its initials ANSM, had already issued a “signal of vigilance” about the anti-malaria drug which is also used to treat lupus and rheumatoid arthritis. […]